'Custom' template category

I posted this in the 'Website Template & Design' forum, but did not receive a reply, so I will post again here:

Is it possible to create a template category called 'Custom' so that users custom templates can be added to this category, rather than the default categories? Can you incorporate this in a future release?

Also, is it possible to hide a users custom template from other users? For instance, I have created some templates for some customers that are applicable to only that customers web site, & I do not want these templates to be available to other customers.

This shouldn't be difficult to implement (at least the 'custom' category).